NEW YORK— Americans may just be getting used to mobile pay, but consumers in many African countries have been paying with their phones for years. Now payment processors Visa and MasterCard want to get a slice of that market, and are launching card services aimed at Africa's growing mobile payment industry. Now Airtel Money subscribers in Kenya will be able to get a...

CHICAGO, March 3- New technology about to be deployed by credit card companies will require U.S. consumers to carry a new kind of card and retailers across the nation to upgrade payment terminals. Anre Williams, president of global merchants services at American Express, cited cost and complexity as reasons for not issuing PIN numbers, which would require a much...

NEW YORK— If you're shopping at Costco, you'll need a new credit card to pay for those family-sized packs of chicken breasts or toilet paper. After only accepting American Express the last 16 years, the retailer is switching to Visa and will use Citigroup as its exclusive provider of co-branded credit cards. Costco is a large and influential chain.

March 2- Warehouse club retailer Costco Wholesale Corp said on Monday it had tied up with Citigroup Inc and Visa Inc to issue co-branded credit cards in the United States and Puerto Rico. Citigroup will exclusively issue the co-brand cards and Visa would provide the payment network, replacing American Express Co, from April 1, 2016, Costco said.

NEW YORK— Costco says it struck a deal for Citi to be the exclusive issuer of its co-branded credit cards, with Visa replacing American Express as the card network. Costco and American Express ended their partnership after failing to reach an agreement on renewal terms. David Sherwood, Costco's director of finance and investor relations, said in a phone...

NEW YORK— Last fall, Apple launched Apple Pay, bringing mobile-payment technology to the iPhone. Samsung's payment service won't come until this summer, and will launch only in the U.S. and South Korea at first. Here's what's known about Samsung Pay and how it compares with Apple Pay and Google's own efforts for Android.